All-Star Professional Wrestling 2

Unlock Kazuo Yamazaki:
Choose Yuji Nagata and win the IWGP belt.

Unlock Kotetsu Yamamoto:
Choose Tiger Hattori as a referee, then KO him.

Unlock Shinjiro Ohtani (junior version):
Beat the heavyweight class Shinjiro Ohtani with a junior wrestler.

Unlock White Mask:
Choose Inoki as your partner in a singles mode match.

Unlock Yuusaku Yuri and Kenichiro Jinnai:
Win the game in rising mode.